If it takes 50-m to stop a car initially moving at 25 m/s,what distance is requi

Question

If it takes 50-m to stop a car initially moving at 25 m/s,what distance is required to sop a car moving at 50 m/s under thesame condition? The Answer is 200-m. I do not understand howto get to this answer, therefore, please show all work and you willbe rewarded with Lifesaver. If it takes 50-m to stop a car initially moving at 25 m/s,what distance is required to sop a car moving at 50 m/s under thesame condition? The Answer is 200-m. I do not understand howto get to this answer, therefore, please show all work and you willbe rewarded with Lifesaver.

Explanation / Answer

initially u=25m/s; S=50m; v=0; v2-u2=2aS; a=-25*25/2/50=-6.25m/s2. now, u=50m/s; v=0; a=-6.25m/s2. v2-u2=2aS; S=50*50/2/6.25=200m.

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